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Human Anatomy: Muscles > Muscles of the Thorax and Abdominal Wall > Flashcards

Muscles of the Thorax and Abdominal Wall Flashcards

1
Q

Diaphragm

A

Origin:
Lumbar Vertebrae
Inferior ribs
Xiphoid Process

Insertion: Central Tendon

Action: Increases vertical dimensions of thorax (for inspiration/ inhaling)

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2
Q

What are the thorax muscles?

A

Internal Intercostals
External Intercostals
Innermost Intercostals

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3
Q

External Oblique

A

Origin: ribs

Insertions:
Linea Alba
Iliac Crest

Actions:
Trunk flexion
Trunk lateral rotation
Trunk rotation
Compresses abdomen

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4
Q

Internal Oblique

A

Origins:
Lumbar Fascia (on back)
Iliac Crest
Inguinal ligament

Insertions:
Linea alba
Lower ribs

Actions:
Trunk flexion
Trunk lateral rotation
Trunk rotation
Compresses abdomen

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5
Q

Rectus Abdominus

A

Origin:
Pubis bone

Insertion:
Xiphoid process
Lower ribs

Action:
Trunk flexion
Compresses abdomen

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6
Q

Transversus Abdominis

A

Origin:
Lumbar fascia
Iliac crest
Inguinal ligament

Insertions:
Linea alba
Pubis

Action:
Compresses abdomen

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7
Q

What are the Abdominal Muscles?

A

External Oblique
Internal Oblique
Rectus Abdominus
Transversus Abdominis

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Human Anatomy: Muscles (5 decks)

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